Door check or closer.



2 SHEETS-SHEET I P- QUENTIN.

000R CHECK 0R CLOSER.

APPLICATION FILED JUNE 10. I914.

Patented D00- 4, 1917.

INVENTOR Ql/E/VTl/V Y ATTORNEY-9 P. QUENTIN. D008 CHECK 0R CLOSER. APPHCATION FILED ml: Io, m4.

1,949,190. l Patented D06. 4,1917,

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eylindrical extension which passes through t and and is igidly connected to the leyeri in a threaded part and flattened portions.

Over such fiat portions is placed the washer 11 (see Fig. 11) having a rectangular hole of the same shape as the flattened portions of the rod. The washer carries on its lower face triangular ratchet teeth which engage similar r'atcl'iet-teeth provided on the upper face of the hub of the lever 13 (see Figs. 4 and 7).

The nut 12, on being screwed, operatively connects the piston 6' the piston rod 9, the central rod 10, the notched Washer 11 and the leverjls.

*Both of the endsof the spiral spring 5 ';"catchesand are engaged, the one in the mortise 'a -of the casing 1, and the other in the i'r'i'or-ti'se'g of the piston '6; the latter-mortise is madeon th'e'hub of the piston (seeFig. 3-)"; the pin it connecting rods 10 and piston "56 is extended to penetrate into the hole made in the spring, so as to insure the-ver- V jtical direction of the connection of the latter and of the piston.

Such spring is divided into several strips parallel in the direction of its length by one or more slits. It is wound in such a direction that the tension increases when thepis'ton moves up.

Thecasing is filled the suitable level witha 'liq'uid' and; a lubricant' which will not The operation of the arat'us is as "01 I lows,

heir the door 'is elbsed the I apparatus the opfening "or the door, cheating mc-ves with the'door to "which it is' s'ecfll rcd.

The hub of the leveiimovesfon the circumfn that aceeunt, the'piston. rod" wise direction.

able j" see -"mov s up while revolving; and adhthe memhers which 'are' associated therewith take part in such dqublegmvegh s'ee"Figs.5 and 9) are in the shape of ;ferenoe"T,- and'theiever slides on the" 'fi-iieller "14. I is forced to revolve "the casing-ina clock- -sah rod, being engaged in" jari'angement nf apparatus,-

the' forms a-nut. moving in a 's'uit filled. b3; the liquidofthe upper space passrug {reply ih-rdug'h the? pprti which. is provided in the piston and which cannot be obstructed b the ball check valve 7 resting on the sea 8;

Furthermore, the rotation of the piston has the effect of compressing the spring,

which is, shortened at the same t in e in an axial direction, such deformation not requiring any material strain on account of the division of the spring into a su'liicicnt number of longitudinal strips;

The lever atthe outside,- on moving up, must slide vertically on the roll '14, which reducesfi'riction and prevents binding or jamming-the pressure onthe 'rollerbeing slight, the vertical height -bein of little extent, and such sliding being Facilitated by the horizontal rolling.

The spring when stretched pulls the lever in the direction opposite to that just mentioned, transmits its strain to the roller, which causes the support- 16, to pivot around the hinges of the door when the latter is no longer pushed, such movements being continued until the door is completely shut.

The piston within the casing, when re volving, is caused to descend, in thuscompressing'the liquid below the same, which liquid;.pressing the ball ohecknpward as it does, cannot escape through the aperture of the 'valve and. must pass through the "ehan nelsb ','b, 2?; :The latter regulated by: the valve 3 only allows it to pass slowlyp-by' the adjustable drive of such serew,.=one ean regulate the speed of the descentyot the. piston and hence that of the closure of thed'o'or.

When the doorhas finished itsimovement, it may be useful to diminish the :checki-ngaction, for example to'let the door g et afcertain speed which will'helpr it to overcome the resistance of the look or ofi anything else;

For this purpose, the recess-d made in the piston iseaused to register with'one'bf the ports 0 of the combineda. cl-ra'rin'els"I0 f0, 0

and offers tofthe: compressed liquida sup plementary passage .orbypassi Sire hrcomhinecl:channelscan 'hegmere or less closedby.

'svalrve tuneovers one or another of the ports unscrewing v thenut m; thus turning; the

right direction fthewlasher 11', the nut being screwed again.-

- It must be understood that in' the-general the? screw ei'ent froi'n {th at'sli dwiiinftheprevitnis e-Xa' pie.

Y To regulate the point at err are devicebeeemes active, one places thedoor 1n .r theijpoeitionj where"flie-attach istobe "ro- The piston; in thns 'm' ovin'g up, prev-ides shiittd'thh: the eages iaaee e the e f come in register, the nut being seton the-lej ver in such position.

, To avoid any loss of liquid by evaporat tion, thereare applied devices which render all the'oints Water tight through which the 1 air mig t come in contact with the liquid.

The present door-closer'can also be aplied (with or without a spring) as a door dent, by the l checkto moderatethe closure of the same,

whether ,such closure is produced by any other brakeless door-closer, or'by anacciwind, or by anythingelse.

Claims 1. A door closer comprising a cylindrical, casing having a lid; a piston 1n: such casing a piston rod secured to the piston, a hollow rod surrounding suchipiston rod, the lid of the casing having a threaded opening and such hollowrod having a threaded part engaging such; threaded opening, a. lever se-t rcured tothe hollow rod, "means whereby to v secure the said hollow rod in anadjustable manner to the said piston rod and a spiral 1 s rin attached at oneend to the ,casingand t eot er end to thepiston.

, 2. A door closer comprising a cylindrical casing,-a piston in such casing, a piston rod Copies on patent my be obtained for traversing the top'of the casing, a lever secured to such rod and a spiral spring atbran'ches together or separately.

tached at one end to the casing andi atgtho other end to the iston such spr" being a th 'de d iy lonconstituted by a in blade divl gitudinal slits extending nearlyto its ends.

' 3. A door closercomprising-a cylindrical i: Y

5 pawing through the to of the casing, a ler casing, a piston in such casing, a piston ver secured to such r a spiral spring one end of which is attached to the casing and the otherndtov the piston, means whereby 5 liquidlin the casing, a channel provide in the wall of the casing and having lateral to guide the piston helically'in the casin ,a

branches which open into the interior of the casing at diflerent points, a channel inthe piston having a port on the'peri heryof the piston' and a port on the top 0 :the iston, said peripheral sport-being so locat channel in the casing, anda valveoturnin in" such channel'radap "d to obstruct 'sai In testimony; thatI claim the as my invention I have signed myname n presence of two subscribin' witnesses.-

Witnesses:

.CHAB. P. Pnnssnr, MAURICE Roux.-

pass in front of said lateral-branches of the he one each, of addressing tho"0omm1ll1om of we,

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